Python 这是在web抓取中旋转代理的正确方法吗

我正在尝试在web抓取中从一组代理池中旋转代理。设置

page\u response=“

”是否正确

page_reponse = ''
while page_reponse == '':
    proxy = next(proxy_pool)
    dict_proxy = {"http": proxy, "https": proxy}
    try:
        page_response = requests.get(iurl, headers=headers,timeout=tout, proxies=dict_proxy)
        break
    except requests.exceptions.ConnectionError as rec:
        pass

在不使用selenium的情况下，我应该如何在代码中实现以下语句：

try a proxy for 3 times and if still it gives error then only i should go to next proxy in the list